code: def try_import_mmcv():
      """Try import mmcv at runtime.
  
      Returns
      -------
      mmcv module if found. Raise ImportError otherwise
  
      """
      msg = "mmcv is required, you can install by first `pip install Cython --user` \
          and then `pip install mmcv --user` (note that this is unofficial PYPI package)."
  
      return try_import("mmcv", msg)
  
file_path: insightface/python-package/insightface/utils/filesystem.py
imports: import os
  import os.path
  import errno
label_desc: Use image node_id 5 for calling a global function with example usage: try_import_mmcv() and returns: try_import